Only one unit hit by multi-shockwave

[PsychoticX]

I have an ability casting 8 shockwaves away from a unit in different directions. If a unit gets hit by any one of them, they shouldn't take any more damage from that instance of the ability. How can I make any unit which receives damage from this immune to it for the rest of the instance?

As it stands, a unit standing in melee range will get hit 3 or 4 times...

 

[Rainther]

I'd take to use triggers for it.
Set the shockwaves to do 0 damage and make a growing call GroupEnumInRange()
And every time an enemy unit is caught within the range it gets injured and added to a group in structs which can't be affected any more by this spell.

Do you need codes? And do you have JassNewGen?